1. M. Buehler, R. Battaglia, A. Cocosco, G. Hawker, J. Sarkis, and K. Yamazaki. Scout: A simple quadruped that walks, climbs and runs. In IEEE Int. Conf. Robotics and Automation, pages 1707–1712, May 1998.
2. M. Buehler, A. Cocosco, K. Yamazaki, and R. Battaglia. Stable open loop walking in quadruped robots with stick legs. In IEEE Int. Conf. Robotics and Automation, pages 2348–2353, May 1999.
3. G. Hawker and M. Buehler. Quadruped trotting with passive knees. In IEEE Int. Conf. Robotics and Automation, pages 3046–3051, April 2000.
4. U. Saranli, M. Buehler, and D. E. Koditchek. Design, modelling and preliminary control of a compliant hexapod robot. In IEEE Int. Conf. Robotics and Automation, pages 2589–2596, April 2000.
5. M. H. Raibert. Legged Robots that Balance. MIT Press, Cambridge, MA, 1986.